Music-leaf turner.



R. WEBER.

MUSIC LEAF TURNER. APPLICATION FILED JULY 13, 1914.

Patented Feb. 23, 1915.

UNITED STATES PATENT orrion.

ROBERT T/VEBER, OF CI-IEHALIS, "WASHINGTON.

MUSIC-LEA TURNER.

Application filed July 13, 1am.

To all whom it may concern:

Be it known that 1, ROBERT lVnBna, a citizen of the United States, residing at Cliehalis, in the county of Lewis and State of ll ashington, have invented certain new and useful Improvements in Music-Leaf Turners, of which the following is a specification, reference being had to the accompanying drawings.

My invention relates to certain new and useful improvements in means which may be instantly employed by a performer upon a piano or organ for turning the leaves of music supported upon a music rack.

It has for its object simplicity of con struction, ready application to a piano or organ and effectiveness of operation and consists in the details of construction and operation to be hereinafter described.

In order that those skilled in the art to which my invention appertains may know how to make, apply and use my invention, 1 will proceed to describe the same referring by numerals to the accompanying drawing, in which Figure 1 is a front elevation showing an ordinary key board and music rack, with my improved leaf turner connected therewith, the solid lines showing the position of the leaf turner before it is set in motion to turn a leaf of music, and the broken lines show ing the position after the leaf has been turned. Fig. 2 is a rear elevation; Fig. 3 is a vertical section on the line w-;0, of Fig. 1. Fig. l is a detail side view of my device with the music rack in section, and Fig. 5 is a transverse section on the line g 2 of Fig. i.

Similar reference numerals indicate like parts in the several figures of the drawing.

1 represents a key board and 2 the back thereof.

3 is a music rack in fixed relation with the key board and its back, and 4: is a finger which is designed to be placed behind a leaf of music and held there until mechanically released and to automatically turn the leaf and assume the position indicated by dotted lines in Fig. 1. The finger 4 is the horizontal extremity of a stiff wire rod 5, which is vertically adjustable in a cylindrical carrier 6, which is rotatably supported between metal angle plates 7 and 8. The wire rod 5 is multisided throughout the extent of its adjustability within the carrier and passing through the angle plates 7 and 8 and being Specification of Letters Patent.

Patented Feb. 23,1915.

Serial No. 850.706.

non-rotatable within the carrier 6, it constitutes the axis of motion of the carrier as will be presently explained.

9 is a set screw passing through one side of the carrier and adapted to impinge upon the rod 5, to obviously hold it in any desired vertical adjustment. The carrierG is formed at or near its base with a cam projection 10 terminating in a shoulder 11, which is designed to interlock w'th a spring bolt or latch 16, when the finger l is in position ready to turn a leaf.

13 is a coil spring, one extremity of which is attached in any suitable manner to the side of the carrier and the other to one edge of the angle plate 7. Between the lower end of the carrier (3, and the angle plate 8, is located an anti-friction washer 1 1. Mount-- ed upon the lower angle plate 8 is a short post 15, which is provided with a diametric slot as a guide for a fiat spring latch 16, which is held against vertical movement by a transverse pin 1. The latch 16, in the rearward direction is inclined upwardly and stepped down to form a shoulder 18, against which av flat spring 19 contacts to automatically shoot the latch forward, when the rotation of the carrier brings the shoulder 11, of the cam past the path of the spring latch, thus causing the latch to then look in an obvious manner, against rotation under the action of tie coil spring 13, and to remain so until the latch has been withdrawn from the shoulder. The rear end of the latch 16 is pivotally mounted in the upper end of a bell crank lever 20, which is vibratively hung in a suitable bearing 21, fixed to the back of the music rack. The lower extremity of the bell crank lever is connected by a wire rod 22, with a vibrative lever 28, the rear end of which is pivoted within a fixed bracket 24, and the front end extending through a channel in the back of the key board and accessible to a performer.

The operation of the improved leaf turner is as follows:The finger f being back of a leaf of music on the rack, and held stationary by the spring latch 16, in contact with the shoulder 11 on the cam 10 of the carrier 6 and it being desired that the music leaf should be turned, the performer quickly presses down the free end of the lever 23, which through the medium of the wire rod 22 and bell crank lever 20, causes the latch to be withdrawn from the cam shoulder 11,

whereupon under the action of the coil spring 13, the carrier is swiftly rotated and by reason of its fixed relation with the finger rod 5, the finger is caused to swing into the position indicated by broken lines in Fig. 1, and thus turn the music leaf.

In the retractive movement of the latch 12, the shoulder 18 puts the flat spring 19 under tension so that when the carrier has been again turned to normal position the spring 19 will force the front end of the latch behind the cam shoulder 11 and thus lock the carrier and the turning finger against movement until again released.

Many changes may be made in the mere details of construction without departing from the genius of my invention which resides in the broad feature of a swinging leaf turning finger adjustably connected with a rotative carrier automatically locked in primary or normal position by a spring latch and released by said latch through the medium of a lever and connections under the control of an operator.

What I claim as new and desire to secure by Letters Patent is 1. In a music turner of the character de scribed, an L-shaped rod, a rotatable carrier within which the rod is vertically adjustable, the carrier being formed with an exterior cam terminating in a shoulder; a coiled spring having one end connected with the hub and its other end fixed to the supporting bracket; a reciprocating latch adapted to interlock with the cam shoulder and formed with a vertical shoulder, a spring secured to the music rack and bearing against the shoulder of the latch and means under the control of an operator for releasing the latch from the hub, substantially as hereinbefore set forth.

2. In a music leaf turner of the character described, an L-shaped rod, a rotatable carrier within which the rod is vertically adjustable, a cam formed upon said carrier and terminating in a shoulder, a spring latch engageable with the cam shoulder to prevent rotation of the carrier, a spring acting to rotate the carrier, a bell crank lever having one arm attached to the latch, and an actuating lever to which the other arm of the bell crank lever is operatively connected.

3. The combination with a music rack and key board back, of a piano, of a rotatable carrier mounted upon the front of the music rack, a spring urging rotation of the carrier in one direction, a vertically adjustable rod disposed within and carried by the carrier having an angularly bent lower end, a stop formed on the carrier, a latch extending through the music rack and adapted to engage said stop, and means for withdrawing said latch including a member projecting out through the back board of the piano in position for forward operation.

In testimony whereof I hereunto affix my signature in the presence of two witnesses.

LILLIAN BARTZ.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

